José Adilson Rodrigues dos Santos, known as Maguila, is recognized worldwide as one of the most legendary boxers in Brazil. Now 64, Maguila suffers from chronic traumatic encephalopathy (CTE), a progressive brain condition thought to be caused by repeated blows to the head. It's particularly associated with contact sports, such as boxing or American football.

Another problem with CTE is that, until recently, it was difficult to diagnose. In 2010 Maguila received an initial diagnosis of Alzheimer's, leading to difficulty choosing the correct treatment. 

"We …

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